Abstract
Purpose
To evaluate whether a narrow posterior joint space (<2 mm) correlated with posterior
joint cartilage degeneration in the hip preservation patient population.
Methods
A retrospective chart review of 155 consecutive hip arthroscopy cases by a single
surgeon (SKA) from March 2012 to February 2013 was performed. Patients were included
in the study if they had an adequate perioperative false profile radiograph and clear
intraoperative arthroscopic images of the posterior hip joint. The narrowest posterior
joint space (NPJS) width and the directly posterior, posterosuperior, superior, and
anterosuperior joint space widths were measured on the false profile radiograph. Femoral
and acetabular cartilage of the posterior hip joint were graded according to the International
Cartilage Repair Society (ICRS) classification system using arthroscopic images obtained
at the time of surgery. The cartilage grades of patients with <2 mm NPJS were compared
with cartilage grades of patients with ≥2 mm NPJS.
Results
There was no difference in cartilage grading between patients with <2 mm NPJS (19
patients) and those with ≥2 mm NPJS (81 patients) (P = .905). The mean age of patients with NPJS ≥2 mm and <2 mm was 34.0 (median 31.2;
interquartile range [IQR] 23.7, 42.9) and 38.7 (median 43.0; IQR 26.1, 50.9) respectively,
and was not statistically different (P = .183). No correlation between cartilage grade and NPJS measurement was found (P = .374).
Conclusion
In this predominantly cam-type femoroacetabular impingement patient cohort, our findings
indicate there is no correlation between a <2 mm posterior hip joint narrowing seen
on false profile radiographs and posterior hip cartilage degeneration confirmed with
arthroscopy. Although posterior arthritis can be visualized on a false profile radiograph,
a posterior joint space measurement <2 mm should not be interpreted as isolated posterior
joint wear and should not be considered a hip arthroscopy contraindication.
Level of Evidence
Level IV, case series.
To read this article in full you will need to make a payment
Purchase one-time access:
Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online accessOne-time access price info
- For academic or personal research use, select 'Academic and Personal'
- For corporate R&D use, select 'Corporate R&D Professionals'
Subscribe:
Subscribe to ArthroscopyAlready a print subscriber? Claim online access
Already an online subscriber? Sign in
Register: Create an account
Institutional Access: Sign in to ScienceDirect
References
- Radiographic assessment of progression in osteoarthritis.Arthritis Rheumatism. 1987; 30: 1214-1225
- Joint space predicts THA after hip arthroscopy in patients 50 years and older.Clin Orthop Relat Res. 2013; 471: 2492-2496
- Outcomes following hip arthroscopy for femoroacetabular impingement with associated chondrolabral dysfunction: minimum two-year follow-up.J Bone Joint Surg Br. 2009; 91: 16-23
- Comprehensive clinical evaluation of femoroacetabular impingement: Part 2, Plain radiography.Arthrosc Tech. 2017; 6: e2003-e2009
- What factors influence long-term survivorship after hip arthroscopy?.Clin Orthop Relat Res. 2011; 469: 362-371
- Hip arthroscopy for labral pathology: Prospective analysis with 10-year follow-up.Arthroscopy. 2009; 25: 365-368
- Hip arthroscopy in patients ages 50 years or older: Minimum 5-year outcomes, survivorship, and risk factors for conversion to total hip replacement.Arthroscopy. 2018; 34: 3001-3009
- [False profile of the pelvis. A new radiographic incidence for the study of the hip. Its use in dysplasias and different coxopathies].Rev Rhum Mal Osteoartic. 1961; 28 ([in French]): 643-652
- Is vertical-center-anterior angle equivalent to anterior coverage of the hip?.Clin Orthop Relat Res. 2009; 467: 2865-2871
- The false-profile view may be used to identify cam morphology.Arthroscopy. 2015; 31: 1728-1732
- Diagnostic performance of bilateral false profile radiographs in early hip osteoarthritis.Joint Bone Spine. 2018; 85: 93-99
- Evaluation of the ‘Lequesne’s false profile’ of the hip in patients with hip osteoarthritis.Osteoarthritis Cartilage. 1999; 7: 295-300
- The false profile view of the hip: Role, interest, economic considerations.Joint Bone Spine. 2002; 69: 109-113
- The faux profil (oblique view) of the hip in the standing position. Contribution to the evaluation of osteoarthritis of the adult hip.Ann Rheum Dis. 1998; 57: 676-681
- Reproducibility and sensitivity to change of various methods to measure joint space width in osteoarthritis of the hip: A double reading of three different radiographic views taken with a three-year interval.Arthritis Res Ther. 2005; 7: R1375-R1385
- Reproducibility and sensitivity to change of a new method of computer measurement of joint space width in hip osteoarthritis. Performance of three radiographic views obtained at a 3-year interval.Osteoarthritis Cartilage. 2009; 17: 864-870
- Examination of acetabular labral tear: A continued diagnostic challenge.Br J Sports Med. 2014; 48: 311-319
- Femoroacetabular impingement: Radiographic diagnosi—What the radiologist should know.Am J Roentgenol. 2007; 188: 1540-1552
- Hip morphology influences the pattern of damage to the acetabular cartilage: Femoroacetabular impingement as a cause of early osteoarthritis of the hip.J Bone Joint Surg Br. 2005; 87: 1012-1018
- The etiology of osteoarthritis of the hip: An integrated mechanical concept.Clin Orthop Relat Res. 2008; 466: 264-272
- ICRS Cartilage Injury Evaluation Package.(Available at:)https://cartilage.org/content/uploads/2014/10/ICRS_evaluation.pdf(Published 2000)Date accessed: August 17, 2017
- Reliability and validity of the Arthroscopic International Cartilage Repair Society classification system: Correlation with histological assessment of depth.Arthroscopy. 2017; 33: 1219-1224
- A guideline of selecting and reporting intraclass correlation coefficients for reliability research.J Chiropr Med. 2016; 15: 155-163
Article info
Publication history
Published online: July 25, 2020
Accepted:
July 16,
2020
Received:
January 14,
2020
Footnotes
The authors report the following potential conflicts of interest or sources of funding: T.G.M. reports personal fees, Arthrex. M.R.K. reports personal fees, Depuy, a Johnson & Johnson company. S.K.A. reports personal fees, Stryker. Full ICMJE author disclosure forms are available for this article online, as supplementary material.
Identification
Copyright
© 2020 by the Arthroscopy Association of North America
